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https://issues.apache.org/jira/browse/HADOOP-18291?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17743361#comment-17743361
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ASF GitHub Bot commented on HADOOP-18291:
-----------------------------------------
hadoop-yetus commented on PR #5843:
URL: https://github.com/apache/hadoop/pull/5843#issuecomment-1636716817
:confetti_ball: **+1 overall**
| Vote | Subsystem | Runtime | Logfile | Comment |
|:----:|----------:|--------:|:--------:|:-------:|
| +0 :ok: | reexec | 0m 38s | | Docker mode activated. |
|||| _ Prechecks _ |
| +1 :green_heart: | dupname | 0m 1s | | No case conflicting files
found. |
| +0 :ok: | codespell | 0m 0s | | codespell was not available. |
| +0 :ok: | detsecrets | 0m 0s | | detect-secrets was not available.
|
| +1 :green_heart: | @author | 0m 0s | | The patch does not contain
any @author tags. |
| +1 :green_heart: | test4tests | 0m 0s | | The patch appears to
include 1 new or modified test files. |
|||| _ trunk Compile Tests _ |
| +1 :green_heart: | mvninstall | 49m 58s | | trunk passed |
| +1 :green_heart: | compile | 0m 44s | | trunk passed with JDK
Ubuntu-11.0.19+7-post-Ubuntu-0ubuntu120.04.1 |
| +1 :green_heart: | compile | 0m 38s | | trunk passed with JDK
Private Build-1.8.0_362-8u372-ga~us1-0ubuntu1~20.04-b09 |
| +1 :green_heart: | checkstyle | 0m 34s | | trunk passed |
| +1 :green_heart: | mvnsite | 0m 45s | | trunk passed |
| +1 :green_heart: | javadoc | 0m 31s | | trunk passed with JDK
Ubuntu-11.0.19+7-post-Ubuntu-0ubuntu120.04.1 |
| +1 :green_heart: | javadoc | 0m 38s | | trunk passed with JDK
Private Build-1.8.0_362-8u372-ga~us1-0ubuntu1~20.04-b09 |
| +1 :green_heart: | spotbugs | 1m 17s | | trunk passed |
| +1 :green_heart: | shadedclient | 34m 53s | | branch has no errors
when building and testing our client artifacts. |
|||| _ Patch Compile Tests _ |
| +1 :green_heart: | mvninstall | 0m 31s | | the patch passed |
| +1 :green_heart: | compile | 0m 31s | | the patch passed with JDK
Ubuntu-11.0.19+7-post-Ubuntu-0ubuntu120.04.1 |
| +1 :green_heart: | javac | 0m 31s | | the patch passed |
| +1 :green_heart: | compile | 0m 27s | | the patch passed with JDK
Private Build-1.8.0_362-8u372-ga~us1-0ubuntu1~20.04-b09 |
| +1 :green_heart: | javac | 0m 27s | | the patch passed |
| +1 :green_heart: | blanks | 0m 0s | | The patch has no blanks
issues. |
| +1 :green_heart: | checkstyle | 0m 22s | | the patch passed |
| +1 :green_heart: | mvnsite | 0m 31s | | the patch passed |
| +1 :green_heart: | javadoc | 0m 17s | | the patch passed with JDK
Ubuntu-11.0.19+7-post-Ubuntu-0ubuntu120.04.1 |
| +1 :green_heart: | javadoc | 0m 28s | | the patch passed with JDK
Private Build-1.8.0_362-8u372-ga~us1-0ubuntu1~20.04-b09 |
| +1 :green_heart: | spotbugs | 1m 5s | | the patch passed |
| +1 :green_heart: | shadedclient | 33m 34s | | patch has no errors
when building and testing our client artifacts. |
|||| _ Other Tests _ |
| +1 :green_heart: | unit | 2m 41s | | hadoop-aws in the patch passed.
|
| +1 :green_heart: | asflicense | 0m 42s | | The patch does not
generate ASF License warnings. |
| | | 135m 30s | | |
| Subsystem | Report/Notes |
|----------:|:-------------|
| Docker | ClientAPI=1.43 ServerAPI=1.43 base:
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-5843/5/artifact/out/Dockerfile
|
| GITHUB PR | https://github.com/apache/hadoop/pull/5843 |
| Optional Tests | dupname asflicense compile javac javadoc mvninstall
mvnsite unit shadedclient spotbugs checkstyle codespell detsecrets |
| uname | Linux bdabdad6fffc 4.15.0-213-generic #224-Ubuntu SMP Mon Jun 19
13:30:12 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | dev-support/bin/hadoop.sh |
| git revision | trunk / f213e13d952c2343ebfe327ffaef19981eaca0c4 |
| Default Java | Private Build-1.8.0_362-8u372-ga~us1-0ubuntu1~20.04-b09 |
| Multi-JDK versions |
/usr/lib/jvm/java-11-openjdk-amd64:Ubuntu-11.0.19+7-post-Ubuntu-0ubuntu120.04.1
/usr/lib/jvm/java-8-openjdk-amd64:Private
Build-1.8.0_362-8u372-ga~us1-0ubuntu1~20.04-b09 |
| Test Results |
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-5843/5/testReport/ |
| Max. process+thread count | 710 (vs. ulimit of 5500) |
| modules | C: hadoop-tools/hadoop-aws U: hadoop-tools/hadoop-aws |
| Console output |
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-5843/5/console |
| versions | git=2.25.1 maven=3.6.3 spotbugs=4.2.2 |
| Powered by | Apache Yetus 0.14.0 https://yetus.apache.org |
This message was automatically generated.
> S3A prefetch - Implement LRU cache for SingleFilePerBlockCache
> --------------------------------------------------------------
>
> Key: HADOOP-18291
> URL: https://issues.apache.org/jira/browse/HADOOP-18291
> Project: Hadoop Common
> Issue Type: Sub-task
> Affects Versions: 3.4.0
> Reporter: Ahmar Suhail
> Assignee: Viraj Jasani
> Priority: Major
> Labels: pull-request-available
> Fix For: 3.3.9
>
>
> Currently there is no limit on the size of disk cache. This means we could
> have a large number of files on files, especially for access patterns that
> are very random and do not always read the block fully.
>
> eg:
> in.seek(5);
> in.read();
> in.seek(blockSize + 10) // block 0 gets saved to disk as it's not fully read
> in.read();
> in.seek(2 * blockSize + 10) // block 1 gets saved to disk
> .. and so on
>
> The in memory cache is bounded, and by default has a limit of 72MB (9
> blocks). When a block is fully read, and a seek is issued it's released
> [here|https://github.com/apache/hadoop/blob/feature-HADOOP-18028-s3a-prefetch/hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/read/S3CachingInputStream.java#L109].
> We can also delete the on disk file for the block here if it exists.
>
> Also maybe add an upper limit on disk space, and delete the file which stores
> data of the block furthest from the current block (similar to the in memory
> cache) when this limit is reached.
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